Kozan Kalesi is a fortress of the 12th century, built by the Leo II on the hill of limestone in the middle of Kozan. It has extended to 900 meters alongside the ridge of the mountain. 

Location of the fortress was unique to dominate the whole region. There are 44 strongholds and towers, that are divided into two groups. Northern and Southern groups are joined by a strong protective wall. 

A huge tower is erected on the left side of the fortress, which was carrying royal apartments in ancient time. Visitors can experience the secret ways built in cellars. These cells were used for the supplies, bunkers and ammunition stores.